Drawer pull-out guide

Abstract

A drawer pull-out guide for movably supporting a drawer on a furniture body includes a body rail to be secured to the furniture body, a loading rail to be connected to the drawer and movably mounted relative to the body rail in a longitudinal direction, and—optionally—a central rail arranged between the body rail and the loading rail. The drawer pull-out guide has a dead weight and a maximum load-bearing capacity, and the ratio of the dead weight of the drawer pull-out guide to the maximum load-bearing capacity of the drawer pull-out guide is less than 1 to 50, preferably less than 1 to 57, particularly preferably less than 1 to 65.

1 . A drawer pull-out guide for movably mounting a drawer on a furniture carcass, comprising:
 a carcass rail to be fastened to the furniture carcass,   at least one drawer rail to be connected to the drawer, which drawer rail is mounted displaceable relative to the carcass rail in a longitudinal direction, and   possibly at least one center rail, which is arranged between the carcass rail and the at least one drawer rail,   wherein the drawer pull-out guide has a dead weight and a maximum load-bearing capacity, and   wherein the ratio of the dead weight of the drawer pull-out guide to the maximum load-bearing capacity of the drawer pull-out guide is less than 1 to 50, preferably less than 1 to 57, particularly preferably less than 1 to 65.   
     
     
         2 . The drawer pull-out guide according to  claim 1 , wherein the at least one drawer rail is displaceable relative to the carcass rail over a pull-out length between a pushed-in end position and a pulled-out end position, the at least one drawer rail has a front end to be connected to a front panel of the drawer, and in the pulled-out end position the front end of the at least one drawer rail can drop by a maximum of 4% of the pull-out length in the case of a load which corresponds to the maximum load-bearing capacity. 
     
     
         3 . The drawer pull-out guide according to  claim 1 , wherein the drawer pull-out guide:
 has a length of between 200 mm and 650 mm in a completely pushed-in state, and/or   has a dead weight of between 125 g and 550 g, and/or   has a maximum load-bearing capacity of between 15 kg and 35 kg, and/or   is manufactured at least predominantly from steel.   
     
     
         4 . The drawer pull-out guide according to  claim 1 , wherein at least one rolling body is arranged between the carcass rail and the at least one drawer rail, preferably wherein:
 the at least one rolling body is mounted rotatable about an axis of rotation, particularly preferably wherein the axis of rotation is aligned transverse to the longitudinal direction, and/or   at least one carriage is provided, in which the at least one rolling body is arranged, and/or   the at least one rolling body is formed substantially cylindrical, and/or   the at least one rolling body consists at least predominantly of plastic.   
     
     
         5 . The drawer pull-out guide according to  claim 1 , wherein the drawer pull-out guide is formed at least in portions from a flat metal sheet, which has a material thickness of between 0.5 mm and 1.0 mm, preferably a material thickness of 0.7 mm. 
     
     
         6 . The drawer pull-out guide according to  claim 1 , wherein the drawer pull-out guide has at least one property, preferably more than one, selected from the following group of properties i. to v.:
 at least one of the rails has, in a cross section normal to the longitudinal direction, at least one profile formed from at least one flat metal sheet with two longitudinal edges running parallel to each other, wherein the profile has at least one foldover with at least a double material thickness on at least one longitudinal edge, preferably on both longitudinal edges,   the carcass rail has at least one fastening portion with a fastening side which, during installation of the drawer pull-out guide on the furniture carcass, can be attached to the furniture carcass at least in portions, wherein the at least one fastening portion has at least one, preferably circular, opening for a fastening means, preferably a screw, to pass through, wherein the at least one opening, on a second side spaced apart from the fastening side by a material thickness of the fastening portion, is surrounded by a ridge which protrudes transversely from the second side of the fastening portion,   at least one of the rails has, in a cross section normal to the longitudinal direction, a profile formed from at least one flat metal sheet, wherein at least one end surface of the profile, in particular two, is formed with a taper,   at least one of the rails has, in a cross section normal to the longitudinal direction, at least one profile formed from at least one flat metal sheet with two longitudinal edges running parallel to each other, wherein at least one embossing extending at least in areas over at least two lateral surfaces of the profile arranged substantially orthogonal to each other is arranged for reinforcing the profile, wherein the lateral surfaces are arranged in the longitudinal direction and the at least one embossing is arranged substantially orthogonal to the longitudinal direction,   at least one of the rails has, in a cross section normal to the longitudinal direction, at least one profile formed from at least one flat metal sheet with two longitudinal edges running parallel to each other, wherein at least two embossings are provided, which are preferably arranged on at least two lateral surfaces oriented substantially orthogonal to and/or adjoining each other and/or extend over at least two lateral surfaces at least in areas, wherein the at least two embossings face in the direction of an inner area and in the direction of an outer area of the at least one rail in an alternating manner, in particular wherein the at least two embossings adjoin each other in the longitudinal direction.   
     
     
         7 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property i., and wherein the at least one foldover:
 is arranged on at least one longitudinal edge of the carcass rail, wherein the foldover can be attached during fastening of the carcass rail to the furniture carcass, and/or   has at least two metal sheet portions resting against each other at least in areas on the at least one longitudinal edge, preferably wherein the at least two metal sheet portions ave at least one common punching, and/or   has at least one crack running in the longitudinal direction on the at least one longitudinal edge in a cross section normal to the longitudinal direction, preferably wherein the at least one foldover is formed on at least one longitudinal edge of the carcass rail.   
     
     
         8 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property i., and wherein the drawer pull-out guide has at least one rolling body, which is mobile at least in portions in the longitudinal direction along the at least one foldover. 
     
     
         9 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property i., and the at least one drawer rail has at least one foldover with at least a double material thickness on both longitudinal edges, wherein the two foldovers are aligned transverse, preferably substantially at right angles, to each other and/or wherein one of the two foldovers is turned inwards and the other of the two foldovers is turned outwards. 
     
     
         10 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property ii., and wherein the ridge:
 is formed substantially toroidal in a cross section, and/or   is formed in one piece together with the at least one fastening portion, and/or   is produced in the at least one fastening portion by embossing.   
     
     
         11 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property iii., and wherein the taper:
 includes an angle in the range between 60° and 140°, preferably between 75° and 105°, particularly preferably of substantially 90°, wherein it is preferably provided that at least one end surface, preferably both, is formed substantially burr-free, and/or   has a taper cross section, parallel to the longitudinal extent of the metal sheet, substantially in the shape of a, preferably isosceles, triangle, wherein it is preferably provided that the taper cross section is formed convex and/or concave.   
     
     
         12 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property iv. and/or v., and wherein at least one carriage with at least one rolling body and/or sliding body is arranged or arrangeable on the drawer pull-out guide, wherein the at least one embossing is arranged on the at least one carcass rail and/or the at least one drawer rail in such a way that the at least one embossing is traversable contactlessly in the longitudinal direction by the at least one carriage and/or the at least one rolling body and/or sliding body. 
     
     
         13 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property iv. and/or v., and wherein precisely three embossings for reinforcing the profile are arranged at least in areas on at least two substantially orthogonally arranged lateral surfaces of the at least one rail. 
     
     
         14 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property iv. and/or v., and wherein the at least two embossings are arranged on the same lateral surface or on the same lateral surfaces extending over at least two lateral surfaces and/or on the at least two lateral surfaces in an alternating manner, wherein it is preferably provided that the at least two embossings are arranged in a transition area of the at least two lateral surfaces in an alternating manner relative to the inner area and the outer area. 
     
     
         15 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property iv. and/or v., and wherein at least, preferably in the case of possibly present groups precisely, two embossings face in the direction of the inner area of the at least one rail and one embossing is arranged in the middle between the at least two embossings and faces in the direction of the outer area of the at least one rail to increase a tensile/compressive strength. 
     
     
         16 . The drawer pull-out guide according to  claim 6 , wherein the drawer pull-out guide has at least property iv. and/or v., and wherein the at least one embossing extends in the orthogonal direction relative to the longitudinal direction of the at least one rail over an area of between one third and three quarters of the lateral surface and/or extends over an area of less than one third, preferably one quarter, of a lateral surface adjoining this lateral surface.